From 621292bae6ae3b25cd3124b63603d01df4cccfb6 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Mon, 15 Feb 2016 16:28:03 +0100 Subject: [PATCH] btrfs: introduce raid-type to error-code table, for minimum device constraint Reviewed-by: Anand Jain Signed-off-by: David Sterba --- fs/btrfs/volumes.c | 15 +++++++++++++++ fs/btrfs/volumes.h | 2 +- 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index e966f0c..6b38b72 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -118,6 +118,21 @@ const u64 btrfs_raid_group[BTRFS_NR_RAID_TYPES] = { [BTRFS_RAID_RAID6] = BTRFS_BLOCK_GROUP_RAID6, }; +/* + * Table to convert BTRFS_RAID_* to the error code if minimum number of devices + * condition is not met. Zero means there's no corresponding + * BTRFS_ERROR_DEV_*_NOT_MET value. + */ +const int btrfs_raid_mindev_error[BTRFS_NR_RAID_TYPES] = { + [BTRFS_RAID_RAID10] = BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET, + [BTRFS_RAID_RAID1] = BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET, + [BTRFS_RAID_DUP] = 0, + [BTRFS_RAID_RAID0] = 0, + [BTRFS_RAID_SINGLE] = 0, + [BTRFS_RAID_RAID5] = BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET, + [BTRFS_RAID_RAID6] = BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET, +}; + static int init_first_rw_device(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_device *device); diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index c73d027..a13a538 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -340,7 +340,7 @@ struct btrfs_raid_attr { }; extern const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES]; - +extern const int btrfs_raid_mindev_error[BTRFS_NR_RAID_TYPES]; extern const u64 btrfs_raid_group[BTRFS_NR_RAID_TYPES]; struct map_lookup { -- 2.7.4